PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21659Reactor

Freed Transformer Co · NSN 5950-00-647-7183 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-7183 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-7183. Primary manufacturer part number: 21659.
Features
  • Reactor — FSC 5950
  • Terminal Type and Quantity: 2 STANDOFF, SOLDER LUG
  • Inductance Type: FIXED
  • Winding Quantity: 1 SINGLE COMPONENT
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.190 INCHES SINGLE GROUP IN
  • Body Length: 3.375 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-647-7183, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Freed Transformer Co. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-7183
Primary Part Number21659
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Terminal Type and Quantity2 STANDOFF, SOLDER LUG
Inductance TypeFIXED
Winding Quantity1 SINGLE COMPONENT
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.190 INCHES SINGLE GROUP IN
Body Length3.375 INCHES NOMINAL IN
DC Resistance Rating in Ohms110.000 SINGLE COMPONENT SINGLE WINDING
Inclosure TypeHERMETICALLY SEALED
Thread Series DesignatorUNF SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length2.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance Rating16.70 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
Body Height4.250 INCHES NOMINAL IN
Thread Quantity Per Inch32 SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current90.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Body Width3.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-997-1910 INTERCHANGEABLE
Seal,plain Encased
5999-01-081-9144135117-1 INTERCHANGEABLE
Shielding Gasket,electronic
The Boeing Company Div Defense
5999-01-147-9393135117-1 INTERCHANGEABLE
Clip,electrical
Continental Electronics Corp
6625-01-278-8133NW21659 INTERCHANGEABLE
Ammeter
Tld Wollard Llc
5307-01-413-511921659 INTERCHANGEABLE
Stud,plain
Industrial Technologies and Services Llc
Cross-Reference Index
Part NumberManufacturer
A2930-16ISSUEE Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
21659 PRIMARY Freed Transformer Co (USA)
A2930-16ISSUEE Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
A2930-16 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
135-1171 PRIMARY Viking Technologies, Ltd. (USA)
A2930-16 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
2930-16 Scomill Inc (USA)
A2930-16ISSUEE Scomill Inc (USA)
Related Parts
5330-00-997-1910INTERCHANGEABLE
SEAL,PLAIN ENCASED
5999-01-081-9144INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
135117-1
5999-01-147-9393INTERCHANGEABLE
CLIP,ELECTRICAL
135117-1
6625-01-278-8133INTERCHANGEABLE
AMMETER
NW21659
5307-01-413-5119INTERCHANGEABLE
STUD,PLAIN
21659

Frequently Asked Questions

What is NSN 5950-00-647-7183?

NSN 5950-00-647-7183 is a Reactor, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-647-7183?

NSN 5950-00-647-7183 has 8 cross-referenced part numbers: A2930-16ISSUEE (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 21659 (Freed Transformer Co), A2930-16ISSUEE (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), A2930-16 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 135-1171 (Viking Technologies, Ltd.) and 3 more.

What NSN replaces 5950-00-647-7183?

There are 5 known substitutes for 5950-00-647-7183: 5330-00-997-1910, 5999-01-081-9144, 5999-01-147-9393 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21659?

Key specifications for 21659: Terminal Type and Quantity: 2 STANDOFF, SOLDER LUG; Inductance Type: FIXED; Winding Quantity: 1 SINGLE COMPONENT; Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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